Zultanite

Zultanite is a gem variety of the mineral diaspore, mined in the İlbir Mountains of southwest Turkey at an elevation of over 4,000 feet. Turkey is the only place where the mineral can be found.^: 154

Depending on its light source, zultanite's color varies between a yellowish green, light gold, and purplish pink. Its color can be pastel green in outdoor light and beige pink in incandescent light.^: 105

Zultanite has a hardness of 6.5 to 7.